A Spatial Aggregation Method of Angle Correlation Target Echoes from Extremely Narrow Pulse Radar

A technology of extremely narrow pulses and target echoes, which is applied in radio wave measurement systems, radio wave reflection/reradiation, instruments, etc., can solve problems such as the inability to effectively segment multiple target echoes, and achieve low possibility of misjudgment, The effect of ensuring accuracy and high computing efficiency

Active Publication Date: 2021-07-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Its disadvantage is that it is impossible to effectively segment the echoes of multiple targets with overlapping distances

Method used

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  • A Spatial Aggregation Method of Angle Correlation Target Echoes from Extremely Narrow Pulse Radar
  • A Spatial Aggregation Method of Angle Correlation Target Echoes from Extremely Narrow Pulse Radar
  • A Spatial Aggregation Method of Angle Correlation Target Echoes from Extremely Narrow Pulse Radar

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Experimental program
Comparison scheme
Effect test

Embodiment

[0099] The effect of the present invention can be illustrated by the following test results of the spatial aggregation of the angle-correlated target echoes of the extremely narrow pulse radar in the lateral interference scene.

[0100] The lateral interference test scene is set as a double target scene, such as Figure 4 Shown:

[0101] The parameter settings are shown in the table below:

[0102] parameter value Horizontal spacing 20m Radial distance (target 1 distance) 1000m target length, width 4.5m×1.8m Radial target coincidence 40％

[0103] Test according to the parameter setting. In the setting of the scene, the distance image cannot distinguish the two targets in the radial direction. The method of the present invention is used to segment the target scattering points, and the coincidence degree of the radial target is set to 40%. After the test, the echo can be obtained Segmentation result map, corresponding to Image 6 , com...

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Abstract

The invention discloses a space aggregation method of angle-related target echoes of extremely narrow pulse radar. Firstly, the angle error information of each extremely narrow pulse is obtained, and the histogram statistics are performed on all the results to obtain the angle distribution law; secondly, the statistical results are obtained. Carry out smoothing processing to complete the aggregation of angles; then, merge the peaks of the smoothed aggregation results, and give the mapping relationship between each peak and the target scattering point; finally, complete the target echo according to the mapping relationship between the angle error information and the peak value Aggregate, and obtain the angle information of the target; the present invention can accurately aggregate extremely narrow pulses belonging to the same target, and give corresponding angle information.

Description

technical field [0001] The invention belongs to the field of ultra-narrow pulse radar data processing, and in particular relates to a space aggregation method for angle-related target echoes of ultra-narrow pulse radar. Background technique [0002] Ultra-narrow pulse radar refers to a type of radar whose pulse width of a single echo after processing is much smaller than the size of the target. For ultra-narrow pulse radar, the echo of the target contains multiple ultra-narrow pulses, which correspond to different scattering points on the target. Therefore, the extremely narrow pulse echo of the target can represent the distribution of target scattering points along the radar line of sight, which is usually called the one-dimensional high-resolution range profile (HRRP) of the target. [0003] Spatial aggregation of target echoes (hereinafter referred to as "echo aggregation") refers to gathering together extremely narrow pulses belonging to the same target in extremely nar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S13/72
CPCG01S7/41G01S13/726
Inventor 李阳王彦华王佳涵龙腾毛二可
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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